Machine for making wire clothes-pin springs.



No. 643,224. Patented Feb. I3, |900.

J. DRUMMUND.

MACHINE FOR MAKING WIRE CLOTHES PIN SPRINGS.

(Application led Nov. 11, 1898.)

2 Sheets-Sheet l.

me Nonms crans co., PnoTnLlTuo.. WASHINGTON. n. c.

No. 643,224. Patented Feb. I3,`|9,00.

' J. lIJI-'IIININIONIL MACHINE FOR MAKING WIRE CLOTHES PIN SPRINGS.

' (Appumian med Nov. 11,71s9s.)

2 Sheets-Sheet 2,

(No Model.)

THE Nnnms PETERS co., PHoTuuTHo.. wnsmmrromuy c.

limitan Jol-1N DRUMMOND, or DANviLLE, cANADA.

MACHINE FOR MAKING WIRE CLOTHES-PIN SPRINGS.

SPECIFICATION forming part of Letters Patent No. 643,224, dated February 13, 1900.

Application led November 1l, 1898. Serial No. 696,156.v (No model.)

To all whom it may concern:

Be it known that I, JOHN DRUMMOND, machinist, ofthe town of Danville, in the county of Richmond, in the Province of Quebec, Can`r ada, have invented certain new and useful Improvements in Machines for Making IVire Clothes-Pin Springs; and I do hereby declare that the following is a full, clear, and exact description of the same.

My invention relates to an improved driving mechanism for machines for coiling and forming clothes-pin springs; and the object of the invention is to devise asuitable power drive that will operate the various parts in their proper relation to each other, so as to facilitate the regularity and celerity ot' their operations; and it consists, essentially, in providing an intermittently-reciprocating bar and suitable connecting means to the coilingspindle operated by a segmental gear-wheel, a cam and spring-operated lever for moving the spring-coiling-spindle carriage, a cam and spring-operated lever for operating the first pair of dies, and a cam and spring-operated mechanism for operating the second pair of dies, all operated by one main shaft and in their proper turn, as hereinafter more particularly explained.

Figure l is a perspective view of a springcoiling machine, partly broken away to show my invention applied thereto Fig. 2 is a similar view from another position, showing the opposite faces of the cam-disks. Fig. 3 is a sectional detail of a cushion-spring. Fig. t is a perspective view of the unfinished article, and Fig. 5 is a similar view of the finished product.

In the drawings like letters of reference indicate corresponding parts in each ligure.

Ais the shaft,suitablyjournaled and driven. On one end of the shaft A is located an end disk B, having on its face a pin b, .preferably carrying the roller o.

C is a reinforcing-bar sliding opposite the end of the shaft A within suitable guide-supports c, attached to the frame of the machine. The bar C carries on its inner face, in close proximity to the face of the disk B, a groovecam C', having two internal faces c', forming arcs of circles of the same radius as is the disk B,between which the roller b is confined. From the upper and lower ends of the camfaces c extend vertical grooves c2, only the upper one of which is shown, sufficiently wide to take the roller b and long enough to allow of its free movement within as the disk B revolves.

C2 is a lever suitably journaled at the lower end at c2 to the frame of the machine and connected by the links c3 and c, respectively, to the reciprocating bar C and the segmental gear-wheel D, which latter intermittently drives the spring-coiling spindle E through the gear-pinion e on the end thereof. The link c* is preferably provided intermediately of its length with the elastic cushion, comprising two rubber or other suitable elastic sleeves c5, surrounding one part of the link c4 and separated by the collar c, firmly attached to the link. The outer ends of the cushioirsleeves c5 are confined by abutting parts of the other half of the link c4, as shown in section in Fig. 3.

On the shaft A, within its bearings, is located the disk F, having on one face the cam f, against which acts the roller g on the pin g', attachedto or forming part of the lower end of the lever Gr, which is suitably pivoted near its center and is connected by the link g3 to the spring-winding-spindle carriage E. To the lever G and the frame of the machine are attached the ends of the spring g4, which is adapted to hold the roller against the face of the cam fand the wheel F. Farther along the shaft A is located the disk H, having the peripheral cam h, against which'acts the roller t', journaled on the pin i', attached to or forming part of the downward extension t* of the reciprocating bar I, which slides in the guidesupports I', attached to the frame of the machine. The roller t' is held against the periphery of the disk H and the cam h by the spring I2, attached at one end to the reciprocating bar I and at the other to the frame of the machine. Y

J is a lever journaled at the bottom to the frame of the machine and connected to the reciprocating bar I by the linkj. The pin 7c, attached to the end of one of the links K and passing loosely through the other, alsopasses through the vertical slot j in the upper end of the lever J and into the i slot Z in the diecase L, in which slot it is free to move. The

opposite ends of the links Karo pivotally con- IOO nected to the outer ends of the dies L'. On the shaft A is a disk M, having a short peripheral cam m, upon which the roller n on the pin n', attached to the lever N, is adapted to ride, being held thereagainst by the spring N. The lever N is pivotally attached atone end at n2 to the frame and at the other end n3 by the rod O tothe outer face of the disk P at some distance from its axle p, which is suitably journaled to the frame of the machine. Similarly attached to the face of the disk P are the links p', the opposite ends of which are pivotally attached to the outer ends of the dies Q.

As my invention embraces only the driving mechanism and not the spring-coiling spindie E, its carriage E, or the dies L and Q, I do not further describe these latter parts nor explain their operation.

Having now described the various parts of my invention, I shall describe their operation.

On rotation of the axle A, with the various disks attached thereto, in the direction shown by arrows the roller b rises in the slot c2, carrying the bar C forward and swinging the segmental gear-wheel I) forward through the lever and link connections, thereby causing the spindle E to rotate and wind the spring in the ordinary manner. When the roller on rotating about the axle A again descends to the bottom of the slot c2, it follows the lefthand face c' of the cam C until it reaches the lower slot c2, when it brings the bar C back and rides up the right-hand face' c to its original position. Meanwhile the roller g rides off the crank-seat, and the spring g4 causes it to fall back to the face of the disk F, thereby bringing the spindle-carriage E back into position for the dies L and Q to act in the ordinary manner. The roller t' now rises upon the cam h and throws the dies L forward opposite the spring in the ordinary manner, holding them there while the roller n rises on the cam m, operating the dies Q throughitslink-and-lever connections. Then on the roller n being brought back to its original position by the spring N the roller t passes olf the cam 7i and the dies L are returned to their original positions by the spring I2, when the roller g rides upon the cam f, and the carriage E' is thrown outwardly at this movement, the roller b entering the lower slot c2, drawing the bar C and the segmental gear-wheel'D back, thereby revolving the spindle E in a reverse direction and detaching the finished spring therefrom.

What I claim as my invention is-- l. In a machine ofthe class described, the combination with the coiling-spindle journaled in a suitable carriageas specified and provided with an end pinion, of a segmental gear suitably supported, the main shaft and disk secured thereto, provided with a suitable roller on its face, the sliding bar supported in suitable ways, the double cam secured thereto and provided with vertical ends, a lever suitably pivoted in the frame, the link connecting it to the sliding bar and the link connecting it to the segmental wheel, all

arranged and operating as shown and for the purpose speciied.

2. In a machine of the class described, the combination with the coiling-spindle jourl naled in a suitable carriage as specified, and

provided with an end pinion, of the segmental gear suitably supported, the main shaft and disk secured thereto provided with a suitable roller on its face, the sliding bar supported in suitable ways, the double cam secured thereto and provided with Vertical ends, a lever suitably pivoted in the frame, the link connecting it to the sliding bar and the link connecting it to the segmental wheel, and a double elastic cushion located intermediate of the length of the latter link, the parts being arranged and constructed as shown and for the purpose specified.

3. In a machine of the class described, the combination with a spring-coiling spindle and carriage thereof, of the main shaft, the diskwheel secured thereto provided with a facecam, a lever pivoted in the frame, a link connecting such lever to the bottom of the springwinding-spindle carriage, a roller suitably journaled on a pin at the bottom of the lever designed to coact with a face-cam on the disk- Wheel,and a spring holding such roller against the cam, as and for the purpose specified.

4. In a machine of the class described, the combination with the die mechanism and operating-lever, of the main shaft, the disk secured thereto provided with a peripheral cam, the sliding bar suitably supported on the frame, a link connecting such bar to the lever J, the spring connected at one end to the sliding bar and the other to the frame, and the roller journaled on a pin on the sliding bar designed to coact with the peripheral cam on the disk, as and for the purpose specified.

5. The combination with the die mechanism., of the rod O, the disk M secured to the shaft and provided with a peripheral cam m, and thelever N pivotally connected t0 the rod O and provided with a roller designed to coact with the cam, as specified.

6. The combination with thedie mechanism, of the rod O, the disk M secured on the shaft and provided With a peripheral cam m, the lever N pivotally connected to the rod and provided with aroller designed to coact with the cam M, and aspring for holding the roller on the peripheral face of the disk, as and for the purpose specified.

Signed at Danville, Canada, this 29th day of October, 1898.

JOHN DRUMMOND. Witnesses:

FRANK PLUMMER, E. I. FETHERSTONHAUGH.

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